/*
 *  Copyright 2008-2010 NVIDIA Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */


/*! \file partition.h
 *  \brief Dispatch layer for the partition functions.
 */

#pragma once

#include <thrust/iterator/iterator_traits.h>

#include <thrust/detail/host/partition.h>
#include <thrust/detail/device/partition.h>

namespace thrust {

namespace detail {

namespace dispatch {

////////////////
// Host Paths //
////////////////
template < typename ForwardIterator,
         typename Predicate >
ForwardIterator partition(ForwardIterator first,
                          ForwardIterator last,
                          Predicate pred,
                          thrust::host_space_tag) {
    return thrust::detail::host::partition(first, last, pred);
}

template < typename ForwardIterator1,
         typename ForwardIterator2,
         typename Predicate >
ForwardIterator2 partition_copy(ForwardIterator1 first,
                                ForwardIterator1 last,
                                ForwardIterator2 result,
                                Predicate pred,
                                thrust::host_space_tag,
                                thrust::host_space_tag) {
    return thrust::detail::host::partition_copy(first, last, result, pred);
}

template < typename ForwardIterator,
         typename Predicate >
ForwardIterator stable_partition(ForwardIterator first,
                                 ForwardIterator last,
                                 Predicate pred,
                                 thrust::host_space_tag) {
    return thrust::detail::host::stable_partition(first, last, pred);
}

template < typename ForwardIterator1,
         typename ForwardIterator2,
         typename Predicate >
ForwardIterator2 stable_partition_copy(ForwardIterator1 first,
                                       ForwardIterator1 last,
                                       ForwardIterator2 result,
                                       Predicate pred,
                                       thrust::host_space_tag,
                                       thrust::host_space_tag) {
    return thrust::detail::host::stable_partition_copy(first, last, result, pred);
}


//////////////////
// Device Paths //
//////////////////
template < typename ForwardIterator,
         typename Predicate >
ForwardIterator partition(ForwardIterator first,
                          ForwardIterator last,
                          Predicate pred,
                          thrust::device_space_tag) {
    return thrust::detail::device::partition(first, last, pred);
}

template < typename ForwardIterator1,
         typename ForwardIterator2,
         typename Predicate >
ForwardIterator2 partition_copy(ForwardIterator1 first,
                                ForwardIterator1 last,
                                ForwardIterator2 result,
                                Predicate pred,
                                thrust::device_space_tag,
                                thrust::device_space_tag) {
    return thrust::detail::device::partition_copy(first, last, result, pred);
}

template < typename ForwardIterator,
         typename Predicate >
ForwardIterator stable_partition(ForwardIterator first,
                                 ForwardIterator last,
                                 Predicate pred,
                                 thrust::device_space_tag) {
    return thrust::detail::device::stable_partition(first, last, pred);
}

template < typename ForwardIterator1,
         typename ForwardIterator2,
         typename Predicate >
ForwardIterator2 stable_partition_copy(ForwardIterator1 first,
                                       ForwardIterator1 last,
                                       ForwardIterator2 result,
                                       Predicate pred,
                                       thrust::device_space_tag,
                                       thrust::device_space_tag) {
    return thrust::detail::device::stable_partition_copy(first, last, result, pred);
}

} // end namespace dispatch

} // end namespace detail

} // end namespace thrust

